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NS0-157 · Question #170

Which two statements are true in a SnapMirror LS mirror relationship? (Choose Two)

The correct answer is B. Client requests to write data are denied unless accessing the admin share. D. Client requests to read data are redirected to the LS mirror destination volumes. SnapMirror Load Sharing (LS) mirrors are strictly read-only destinations that redirect client read requests to the mirror destination while denying all write requests.

Data Protection and High Availability

Question

Which two statements are true in a SnapMirror LS mirror relationship? (Choose Two)

Options

  • AClient requests to write data are allowed if the user is root
  • BClient requests to write data are denied unless accessing the admin share.
  • CClient requests to read data are only allowed if the mirror is up-to-date.
  • DClient requests to read data are redirected to the LS mirror destination volumes.

How the community answered

(64 responses)
  • A
    11% (7)
  • B
    81% (52)
  • C
    8% (5)

Why each option

SnapMirror Load Sharing (LS) mirrors are strictly read-only destinations that redirect client read requests to the mirror destination while denying all write requests.

AClient requests to write data are allowed if the user is root

LS mirror destinations are read-only at the volume level, which means write access is denied even to root users - root privilege does not override the read-only protection of a mirror destination.

BClient requests to write data are denied unless accessing the admin share.Correct

LS mirror destinations are read-only volumes enforced at the protocol level, so all client write requests are denied regardless of user privilege level, with the admin share being the only exception path for administrative access.

CClient requests to read data are only allowed if the mirror is up-to-date.

Read access on LS mirror destinations is always available to clients regardless of mirror synchronization state; the data may be slightly behind the source but is never withheld based on currency.

DClient requests to read data are redirected to the LS mirror destination volumes.Correct

A core purpose of LS mirrors is to offload read traffic from the source by redirecting client read requests to one or more destination volumes, improving read performance and availability.

Concept tested: SnapMirror Load Sharing mirror read/write access behavior

Source: https://docs.netapp.com/us-en/ontap/data-protection/snapmirror-load-sharing-mirror-concept.html

Topics

#SnapMirror LS#load sharing mirror#read redirection#write restrictions

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